Intrinsic integrated UBVRI colors of Galactic globular clusters

Details Intrinsic integrated UBVRI colors of Galactic globular clusters Intrinsic integrated UBVRI colors of Galactic globular clusters

May 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pasp..100..545r&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 100, May 1988, p. 545-567. Research supported by the Un

Astronomy and Astrophysics

Astronomy

146

Globular Clusters, Stellar Color, Stellar Spectrophotometry, Ubv Spectra, Astronomical Spectroscopy, Interstellar Extinction, Metallicity, Stellar Spectra

Scientific paper

Observed integrated colors, spectral types, and E(B-V) color excesses for 50 Galactic globular clusters are used to calibrate the relationship between intrinsic UBVRI colors and integrated spectral types. Color excesses are then estimated from Reed's averages of observed (B-V) colors for 93 clusters with integrated spectral types on the Hesser and Shawl system. The authors find that the R and I colors add little reddening information. Mean colors of five spectral-type groupings are presented. Clusters of the latest spectral type (i.e., most metal rich) are particularly easy to identify in the (U-V)0, (V-I)0 diagram. Distributions of the inferred reddenings and intrinsic colors with Galactic longitude and latitude are presented.

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